| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device having a structure in which an electrical connection of specific two cells of a battery pack where a plurality of cell are connected in series can be released reliably and an electric loss can be suppressed and moreover the power supply device can be downsized.SOLUTION: The power supply device includes a service plug 40 composed of a fixed part 42 which has a conductive plate 44 serially connected directly with a connecting terminal of specific two neighboring cells of a battery pack 30, and a connection releasing part 50 capable of being attached to and detached from the fixed part 42 for making an electrical connection with the conductive plate 44 and a release from connection. With this, as compared with a case in which an electric wire is extracted from the connection terminal of the cell 34, control of an electrical loss and downsizing of the power supply device can be achieved. |
